About this 3D model
Boing! This MrSaturn keychain is just around 2.5cm, the perfect size to have dangling from your key! I've printed the one pictured using Flex PLA, but regular PLA should work too. For the hairs, I used black fishing line (the stronger the better), which retains its shape well while still being bendy. See the "Printing details" section below for more information on how to assemble. You will need needle nose pliers for this.